Over the South Atlantic the belt of prevailing westerlies extends from about latitude 40° S almost to Antarctica, and the South Atlantic high-pressure area is centred around 30° S. This anticyclone (circulation of winds around a central region of high atmospheric pressure) leads to southeast trade winds on its north side, since the rotation of wind around the high-pressure area is opposite to that in the Northern Hemisphere because of the Coriolis force (the effect caused by Earth’s rotation). The southeast trades meet the northeast trades in the intertropical convergence zone, a region roughly centring on the ... (100 of 11,621 words)